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Type of cryptographic protocol
authentication protocol is a type of computer communications protocol or cryptographic protocol specifically designed for transfer of authentication data
Authentication_protocol
Authentication protocol for the point-to-point protocol
Extensible Authentication Protocol (EAP) is an authentication framework frequently used in network and internet connections. It is defined in RFC 3748
Extensible Authentication Protocol
Extensible_Authentication_Protocol
Computer authentication protocol
Kerberos (/ˈkɜːr.bər.ɒs/) is a computer-network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure
Kerberos_(protocol)
Protocol that encapsulates Extensible Authentication Protocol
Extensible Authentication Protocol, also known as Protected EAP or simply PEAP, is a protocol that encapsulates the Extensible Authentication Protocol (EAP)
Protected Extensible Authentication Protocol
Protected_Extensible_Authentication_Protocol
Authentication protocol
The Client to Authenticator Protocol (CTAP) enables a roaming, user-controlled cryptographic authenticator (such as a smartphone or a hardware security
Client to Authenticator Protocol
Client_to_Authenticator_Protocol
Protocol used by Point-to-Point Protocol
Password Authentication Protocol (PAP) is a password-based authentication protocol used by Point-to-Point Protocol (PPP) to validate users. PAP is specified
Password Authentication Protocol
Password_Authentication_Protocol
Authentication protocol to validate users
the Challenge-Handshake Authentication Protocol (CHAP) is an authentication protocol originally used by Point-to-Point Protocol (PPP) to validate users
Challenge-Handshake Authentication Protocol
Challenge-Handshake_Authentication_Protocol
Secure network protocol suite
communications over Internet Protocol (IP) networks. It supports network-level peer authentication, data origin authentication, data integrity, data confidentiality
IPsec
Data link layer communication protocol
LCP options: Authentication - Peer routers exchange authentication messages. Some authentication choices are Password Authentication Protocol (PAP), Challenge
Point-to-Point_Protocol
Computer network management and monitoring protocol
different authentication and privacy protocols – MD5, SHA and HMAC-SHA-2 authentication protocols and the CBC_DES and CFB_AES_128 privacy protocols are supported
Simple Network Management Protocol
Simple_Network_Management_Protocol
Authentication networking protocol
Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized authentication, authorization, and accounting (AAA)
RADIUS
Internet protocol that uses a proxy server
Internet protocol that exchanges network packets between a client and server through a proxy server. SOCKS5 optionally provides authentication, so only
SOCKS
Framework for authentication and data security in Internet protocols
Simple Authentication and Security Layer (SASL) is a framework for authentication and data security in Internet protocols. It decouples authentication mechanisms
Simple Authentication and Security Layer
Simple_Authentication_and_Security_Layer
Two parties authenticating each other at the same time
Mutual authentication or two-way authentication is the simultaneous and reciprocal authentication of two parties. It is part of authentication protocols, default
Mutual_authentication
Cryptographic network protocol
keeps private. While authentication is based on the private key, the key is never transferred through the network during authentication. SSH only verifies
Secure_Shell
Means to confirm a user's identity
authenticators to the verifier through an established authentication protocol, the verifier is able to infer the claimant's identity. Authenticators may
Authenticator
Aspect of cryptography
or establishment Entity authentication, perhaps using an authentication protocol Symmetric encryption and message authentication key material construction
Cryptographic_protocol
Computer network protocol
specification allows authentication using any PPP authentication method. In the Microsoft implementation, the tunneled PPP traffic can be authenticated with PAP,
Point-to-Point Tunneling Protocol
Point-to-Point_Tunneling_Protocol
Type of authentication protocol
answer ("response") to be authenticated. The simplest example of a challenge–response protocol is password authentication, where the challenge is asking
Challenge–response authentication
Challenge–response_authentication
Process of establishing confidence in user identity
authentication is the process of establishing confidence in user identities electronically presented to an information system. Digital authentication
Electronic_authentication
Suite of Microsoft security protocols
security protocols intended to provide authentication, integrity, and confidentiality to users. NTLM is the successor to the authentication protocol in Microsoft
NTLM
Augmented password-authenticated key exchange protocol
(SRP) Protocol for TLS Authentication". RFC 5054 Carlson, James; Aboba, Bernard; Haverinen, Henry (July 2001). "EAP SRP-SHA1 Authentication Protocol". IETF
Secure Remote Password protocol
Secure_Remote_Password_protocol
Network attack in which valid data transmission is repeated or delayed
e. within that 'reasonable' limit, could succeed. The Kerberos authentication protocol includes some countermeasures. In the classic case of a replay
Replay_attack
Microsoft authentication protocols
Windows Authentication (IWA) is a term associated with Microsoft products that refers to the SPNEGO, Kerberos, and NTLMSSP authentication protocols with
Integrated Windows Authentication
Integrated_Windows_Authentication
Single sign-on protocol
The Central Authentication Service (CAS) is a single sign-on protocol for the web. Its purpose is to permit a user to access multiple applications while
Central Authentication Service
Central_Authentication_Service
Lightweight Extensible Authentication Protocol (LEAP) is a proprietary wireless LAN authentication method developed by Cisco Systems. Important features
Lightweight Extensible Authentication Protocol
Lightweight_Extensible_Authentication_Protocol
Industry consortium for authentication
strong authentication for the web. At its core, FIDO2 consists of the W3C Web Authentication (WebAuthn) standard and the FIDO Client to Authenticator Protocol
FIDO_Alliance
Computer network protocol
Diameter is an authentication, authorization, and accounting (AAA) protocol for computer networks. It evolved from the earlier RADIUS protocol. It belongs
Diameter_(protocol)
Networking protocol for clock synchronization
to describe its operation. It introduced a management protocol and cryptographic authentication scheme which have both survived into NTPv4, along with
Network_Time_Protocol
IEEE standard for port-based network access control
control. It is part of the IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach to a LAN or Wireless
IEEE_802.1X
Method of negotiating credentials between web server and browser
July 2011. Digest access authentication was originally specified by RFC 2069 (An Extension to HTTP: Digest Access Authentication). RFC 2069 specifies roughly
Digest_access_authentication
Extension of Internet protocol
submission protocol, Extended SMTP (ESMTP), and Simple Authentication and Security Layer (SASL). An older SASL mechanism for ESMTP authentication (ESMTPA)
SMTP_Authentication
Authentication protocol to validate users
the WPA-Enterprise protocol). It is further used as the main authentication option of the Protected Extensible Authentication Protocol (PEAP). Compared
MS-CHAP
Access control method for the HTTP network communication protocol
Protocol -- HTTP/1.0. Internet Engineering Task Force. sec. 10.16. doi:10.17487/RFC1945. RFC 1945. Reschke, Julian. The 'Basic' HTTP Authentication Scheme
Basic_access_authentication
Internet protocol used for relaying e-mails
Protocol Binary Content Extension RFC 3516 Sender Policy Framework (SPF) Simple Authentication and Security Layer (SASL) RFC 4422 SMTP Authentication
Simple_Mail_Transfer_Protocol
Cryptographic protocol
addition to authentication and encryption, OTR provides forward secrecy and malleable encryption. The primary motivation behind the protocol was providing
Off-the-Record Messaging protocol
Off-the-Record_Messaging_protocol
Authenticated encryption protocol for Wireless LAN
Chaining Message Authentication Code Protocol (Counter Mode CBC-MAC Protocol) or CCM mode Protocol (CCMP) is an authenticated encryption protocol designed for
CCMP_(cryptography)
Message authentication verifiable only by participants
In cryptography, deniable authentication is message authentication between a set of participants where the participants themselves can be confident in
Deniable_authentication
MPPE) and authentication methods to use. Access control and authentication: Using protocols like Challenge-handshake authentication protocol (CHAP) or
Point-to-Point Protocol daemon
Point-to-Point_Protocol_daemon
(or if Authentication fails), the Link Termination Phase is performed, and PPP returns to the Link Dead state. "Point-to-Point (PPP) Protocol Field Assignments"
Link_Control_Protocol
System to verify the source and or authenticity of a message
In information security, message authentication or data origin authentication is a property that a message has not been modified while in transit (data
Message_authentication
Password-based authentication method
In cryptography, Simultaneous Authentication of Equals (SAE) is a password-based authentication and password-authenticated key agreement method. SAE is
Simultaneous Authentication of Equals
Simultaneous_Authentication_of_Equals
Interactive key creation in cryptography
(SRP) Protocol for TLS Authentication". RFC Editor. doi:10.17487/rfc5054. RFC 5054. Harkins, D.; Zorn, G. (August 2010). "Extensible Authentication Protocol
Password-authenticated key agreement
Password-authenticated_key_agreement
Encryption method
Output: ciphertext and authentication tag (message authentication code or MAC). Decryption Input: ciphertext, key, authentication tag, and optionally a
Authenticated_encryption
Method of computer access control
Multi-factor authentication (MFA), also known as two-factor authentication (2FA), is an electronic authentication method in which a user is granted access
Multi-factor_authentication
Computer security procedure
Authentication, authorization, and accounting (AAA) is a framework used to control and track access within a computer network. Authentication is concerned
Authentication, authorization, and accounting
Authentication,_authorization,_and_accounting
Single-use value in secure communications
communication. It is often a random or pseudo-random number issued in an authentication protocol to ensure that each communication session is unique, and therefore
Cryptographic_nonce
Authentication protocol used in 3G networks
for digest access authentication. AKA is a challenge–response based mechanism that uses symmetric cryptography. AKA – Authentication and Key Agreement
Authentication and Key Agreement
Authentication_and_Key_Agreement
Authenticated encryption mode for block ciphers
field GF(2128) to compute the authentication tag, hence its name. Galois Message Authentication Code (GMAC) is an authentication-only variant of GCM that can
Galois/Counter_Mode
System that regulates the formation of blocks on a blockchain
challenge-response protocol has a known solution (chosen by the provider), or is known to exist within a bounded search space. Solution–verification protocols do not
Proof_of_work
Open and decentralized authentication protocol standard
standard and decentralized authentication protocol promoted by the non-profit OpenID Foundation. It allows users to be authenticated by co-operating sites
OpenID
PANA (Protocol for Carrying Authentication for Network Access) is an IP-based protocol that allows a device to authenticate itself with a network to be
Protocol for Carrying Authentication for Network Access
Protocol_for_Carrying_Authentication_for_Network_Access
System to prevent email fraud
Domain-based Message Authentication, Reporting and Conformance (DMARC) is an email authentication protocol. It is designed to give email domain owners
DMARC
Act of proving an assertion
indicating a person or thing's identity, authentication is the process of verifying that identity. Authentication is relevant to multiple fields. In art
Authentication
Key transport protocol
Needham–Schroeder Public-Key Protocol, based on public-key cryptography. This protocol is intended to provide mutual authentication between two parties communicating
Needham–Schroeder_protocol
Passwordless authentication credential key
of WebAuthn passkeys acts as part of multi-factor authentication, requiring additional authentication methods such as password or email verification to
Passkey
Application layer protocol
by a client to provide authentication information. The authentication mechanisms described above belong to the HTTP protocol and are managed by client
HTTP
Cryptographic protocols for securing data in transit
letter m. Message Authentication Code (MAC): 16, 20, or 32 bytes (optional) A message authentication code computed over the Protocol message(s) field,
Transport_Layer_Security
Computer network protocol
protocols handling remote authentication and related services for network access control through a centralized server. The original TACACS protocol,
TACACS
Non-federated cryptographic protocol
the Sparse Post-Quantum Ratchet (SPQR). The protocol provides confidentiality, integrity, authentication, participant consistency, destination validation
Signal_Protocol
HTTP extension supporting TLS encryption
Hypertext Transfer Protocol Secure (HTTPS) is an extension of the Hypertext Transfer Protocol (HTTP). It uses encryption for secure communication over
HTTPS
Standard for multi-factor authentication
which includes the W3C Web Authentication (WebAuthn) standard and the FIDO Alliance's Client to Authenticator Protocol 2 (CTAP2). While initially developed
Universal_2nd_Factor
Subfield of quantum cryptography
Quantum authentication is the sub-field of quantum cryptography that aims to apply quantum information theory for the purpose of authentication of quantum
Quantum_authentication
Form of message tampering
cryptographic protocols include some form of endpoint authentication specifically to prevent MITM attacks. For example, TLS can authenticate one or both
Man-in-the-middle_attack
Address Resolution Protocol ATM Asynchronous Transfer Mode CHAP Challenge Handshake Authentication Protocol CDP Cisco Discovery Protocol DCAP Data Link Switching
List of network protocols (OSI model)
List_of_network_protocols_(OSI_model)
Method of exchanging cryptographic keys
additional password authentication, see e.g. US patent "Advanced modular handshake for key agreement and optional authentication". X3DH was initially
Diffie–Hellman_key_exchange
Computer communications authentication algorithm
as hash-based message authentication code or keyed-hash message authentication code) is a specific type of message authentication code (MAC) involving
HMAC
Network protocol supporting distributed directory information services
for extensibility, integrated the Simple Authentication and Security Layer, and better aligned the protocol to the 1993 edition of X.500. Further development
Lightweight Directory Access Protocol
Lightweight_Directory_Access_Protocol
Set of reserved Internet domain names
8064. A. DeKok (May 2026). The eap.arpa. Domain and Extensible Authentication Protocol (EAP) Provisioning. Internet Engineering Task Force (IETF). doi:10
Special-use_domain_name
The Wide-Mouth Frog protocol is a computer network authentication protocol designed for use on insecure networks (the Internet for example). It allows
Wide_Mouth_Frog_protocol
Practice and study of secure communication techniques
keystream. Message authentication codes (MACs) are much like cryptographic hash functions, except that a secret key can be used to authenticate the hash value
Cryptography
IEEE network security standard
origin authentication. By assuring that a frame comes from the station that claimed to have sent it, MACSec can mitigate attacks on Layer 2 protocols. Publishing
IEEE_802.1AE
Security profile for Real-time Transport Protocol
Real-time Transport Protocol (SRTP) is a profile for Real-time Transport Protocol (RTP) intended to provide encryption, message authentication and integrity
Secure Real-time Transport Protocol
Secure_Real-time_Transport_Protocol
Remote computer desktop sharing protocol
encryption, the SPICE protocol allows for a choice of authentication schemes. The original SPICE protocol defined a ticket based authentication scheme using a
Simple Protocol for Independent Computing Environments
Simple_Protocol_for_Independent_Computing_Environments
Binary messaging protocol used by the Microsoft Security Support Provider Interface
binary messaging protocol used by the Microsoft Security Support Provider Interface (SSPI) to facilitate NTLM challenge-response authentication and to negotiate
NTLMSSP
Key/Config-authentication is used to solve the problem of authenticating the keys of a person (say "person A") that some other person ("person B") is
Key_authentication
U.S. government cryptographic standard
specific conditions are met, and strengthened the requirements on user authentication and integrity testing. The FIPS 140 standard established the Cryptographic
FIPS_140-3
Information used for message authentication and integrity checking
cryptography, a message authentication code (MAC), sometimes known as an authentication tag, is a short piece of information used for authenticating and integrity-checking
Message_authentication_code
Technical standard for authentication and authorization
specify the method of authentication at the identity provider. The IdP may use a username and password, or some other form of authentication, including multi-factor
SAML
and devices communicating with them for authenticating protected content. The restricted authentication protocol uses asymmetric key management and common
Key_selection_vector
Internet protocol that helps identify the user of a particular TCP connection
server’s host. The protocol listens on TCP port 113. It obsoletes the earlier “Authentication Server” protocol. The Ident Protocol is designed to work
Ident_protocol
Digital networking protocol
users. Typically, IPoE uses Dynamic Host Configuration Protocol and Extensible Authentication Protocol to provide the same functionality as PPPoE, but in
IPoE
Network authentication protocol
The Neuman–Stubblebine protocol is a computer network authentication protocol designed for use on insecure networks (e.g., the Internet). It allows individuals
Neuman–Stubblebine_protocol
Hacking technique
NTLM authentication, whether it runs on a machine with Windows, Unix, or any other operating system. On systems or services using NTLM authentication, users'
Pass_the_hash
Communications protocol not documented by a publicly available standard
extension to the Kerberos network authentication protocol for the Windows 2000 operating system. The extensions made the protocol incompatible with implementations
Proprietary_protocol
Principal protocol used to assign IPv4 addresses on an IPv4 network
lack of authentication does not prevent the DHCP server operator from relying on the authorization token. Another extension, Authentication for DHCP
Dynamic Host Configuration Protocol
Dynamic_Host_Configuration_Protocol
Decentralized social networking protocol
The AT Protocol (Authenticated Transfer Protocol, pronounced "at protocol", commonly shortened to ATproto or "ATP") is a protocol and set of open standards
AT_Protocol
Cryptographic key agreement scheme
protocol is a cryptographic key agreement scheme. The protocol is based on classic Diffie–Hellman, and provides mutual key and entity authentication.
Station-to-Station_protocol
Deprecated security algorithm for wireless networks
Two methods of authentication can be used with WEP: Open System authentication and Shared Key authentication. In Open System authentication, the WLAN client
Wired_Equivalent_Privacy
Integration EAP—Extensible Authentication Protocol EAP-AKA—EAP Authentication and Key Agreement EAP-AKA'—EAP Authentication and Key Agreement prime EAP-EKE—EAP
List of computing and IT abbreviations
List_of_computing_and_IT_abbreviations
Communication protocol for printers
Digest access authentication mechanism, GSSAPI, or any other HTTP authentication methods. Encryption is provided using the TLS protocol-layer, either
Internet_Printing_Protocol
Surveillance strategy
cryptography Outline of cryptography Classical cipher Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem
Harvest_now,_decrypt_later
Method of user authentication in computing
authorization protocol, rather than an authentication protocol. Using OAuth on its own as an authentication method may be referred to as pseudo-authentication. The
OAuth
Deleting data by deleting encryption keys
cryptography Outline of cryptography Classical cipher Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem
Crypto-shredding
Digital asset using a distributed ledger
2020 as "alternative versions of Bitcoin" given its role as the model protocol for cryptocurrency designers. A Polytechnic University of Catalonia thesis
Cryptocurrency
Internet security protocol
DNS-based Authentication of Named Entities (DANE) is an Internet security protocol to allow X.509 digital certificates, commonly used for Transport Layer
DNS-based Authentication of Named Entities
DNS-based_Authentication_of_Named_Entities
Protocol for communicating between LLMs and applications
The Model Context Protocol (MCP) is an open standard and open-source framework introduced by Anthropic in November 2024 to standardize the way artificial
Model_Context_Protocol
Stream cipher
Crypto1 is a proprietary encryption algorithm (stream cipher) and authentication protocol created by NXP Semiconductors for its MIFARE Classic RFID contactless
Crypto-1
Network communication protocol for providing shared access to resources
LanmanWorkstation). It uses NTLM or Kerberos protocols for user authentication. It also provides an authenticated inter-process communication (IPC) mechanism
Server_Message_Block
Algorithm for public-key cryptography
Bertacco, Valeria; Austin, Todd (March 2010). "Fault-based attack of RSA authentication". 2010 Design, Automation & Test in Europe Conference & Exhibition (DATE
RSA_cryptosystem
travel, tourism, insurance
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
AUTHENTICATION PROTOCOL
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